It is now two years since the first prisoners were transferred to Guantánamo Bay. This prolonged indefinite detention violates a fundamental legal principle that anyone must be allowed to challenge the lawfulness of their detention. You have repeatedly promised that the USA will stand firm for the "non-negotiable demands of human dignity", including the rule of law. For many, these words have rung hollow as the lack of legal process for the Guantánamo detainees continues.

I call on you to ensure that all those held in Guantánamo are released if they are not to be charged and brought to fair trial. I do not believe that trials by the military commissions envisaged in your Military Order would meet international standards.

I am also concerned for the fate of those detainees who might, if returned to their countries, risk serious human rights violations, including ethnic Uighurs facing possible return to China. I fear this risk has been increased by public statements by you and other senior US officials, labelling those held as "terrorists" and "killers".

I urge you to ensure that no-one is forcibly returned to a country where they would face serious human rights violations.